71623061 has 2 divisors, whose sum is σ = 71623062. Its totient is φ = 71623060.

The previous prime is 71623049. The next prime is 71623117. The reversal of 71623061 is 16032617.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50324836 + 21298225 = 7094^2 + 4615^2 .

It is a cyclic number.

It is not a de Polignac number, because 71623061 - 2⁶ = 71622997 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71623061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71623021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35811530 + 35811531.

It is an arithmetic number, because the mean of its divisors is an integer number (35811531).

Almost surely, 2^71623061 is an apocalyptic number.

It is an amenable number.

71623061 is a deficient number, since it is larger than the sum of its proper divisors (1).

71623061 is an equidigital number, since it uses as much as digits as its factorization.

71623061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 71623061 is about 8463.0408837486. The cubic root of 71623061 is about 415.2895081552.

Adding to 71623061 its reverse (16032617), we get a palindrome (87655678).

The spelling of 71623061 in words is "seventy-one million, six hundred twenty-three thousand, sixty-one".